package com.demo.common;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Servlet Filter implementation class PrivilegeInterceptor
 */
@WebFilter("/*")
public class PrivilegeInterceptor implements Filter {

    /**
     * Default constructor. 
     */
    public PrivilegeInterceptor() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req=(HttpServletRequest) request;
		HttpServletResponse res=(HttpServletResponse) response;
		HttpSession session=req.getSession();
		String uri=req.getRequestURI(); 
		if (uri.contains("assets") || uri.contains("login") || uri.contains("dopow") || uri.contains("web")){
				chain.doFilter(request, response);
			return;
		}
		if (session.getAttribute("userList")==null) {
			res.sendRedirect(req.getContextPath()+"/dopow.action");
			return;
		}
		chain.doFilter(request, response);
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
